This is an optional Vanquish Products "Incision" C-Hub Set, and is intended for use with the Axial XR-10 and Wraith. These heavy duty c-hubs are precision machined from high quality aluminum, hard anodized and dust finished for durability and unique looks. They have been designed to work with the stock knuckles, as well as the Vanquish "Incision" Zero Ackermann knuckles and have been machined for clocking, then broached for proper fit.